How about a little humility? Give the guy credit for actually going somewhere. Most boats just sit in their slips all year long. Besides, the stream is not a factor to sailors from other locations.
I am reminded of an old saying, "no stupid questions, just stupid answers".
He asked a legitimate question.
The OP asked a legitimate question and several of us gave non-judgemental answers. Unfortunately, like it or not, the question reveals quite a lack of knowledge/understanding/experience that makes it questionable whether the OP is reasonably capable of making such a voyage in safety. While questioning that might not be "nice", or particularly "PC", sometimes harsh realities do bite us in the "Ass..ume".
Unfortunately, we--society in general--have arrived at a point at which we are so concerned with being "kind" we fail to slap people in the face with the cold, hard, facts that may be necessary to snap them back to realistic assessments of their own circumstances and let them know what they don't know they don't know (their "unknown unknowns" to coin a phrase).
Not too many years ago a study was published on "ridicule" and children. One material finding was that in the 1940's, 50's and 60's it was the ridicule of childrens' peers that led the vast majority of substantially over-weight children to loose weight (to their own benefit). Since the 60's, however, the "need" of "being nice" (i.e. kind) has contributed to an explosion of adolescent obesity as there is no/little stigma with being morbidly over-weight. Similarly the practice of making "everyone a winner". Everyone's not a winner. Everyone's average or, in fact, less so as the real "winner's pull up the overall average. If you want a winner you have to make him or her work hard and take their knocks and keep going anyway.
The OP might make the trip he/she proposes safely, or might not. The effort will certainly be a learning experience, particularly if the winds shift to north-easterlies and drive the Stream closer to shore. In any case, in all likelihood he/she will survive quite nicely and end up more knowledgeable for the experience, but there is nothing wrong with calling it like one sees it. Perhaps "not Nice" but, frankly, Life "ain't" always nice, is it?